When a bash function ends its return value is its status: zero for success, non-zero for failure. To return values, you can set a global variable with the result, or use command substitution, or you ...

The Linux command line is a powerful tool that gives you complete control over your system. But to unleash its full potential, you must understand the environment in which it operates. One crucial ...

When preparing scripts that will run in bash, it’s often critical to be able to set up numeric variables that you ... you can increase the value of a numeric value by more than one whenever ...

Bash handles variables a bit oddly compared to any of the "real" languages I've used. In particular, you must refer to the same variable with different syntax when setting its value versus when ...